| spine | |
| 1. n. The series of bones situated at the back from the head to the pelvis of a person, or from the head to the tail of an animal; backbone, vertebral column. | |
| 2. n. Something resembling a backbone, such as a ridge, or a long, central structure from which other structures radiate. | |
| 3. n. The narrow, bound edge of a book. | |
| 4. n. A pointed, fairly rigid protuberance or needle-like structure on an animal, shell, or plant. | |
| 5. n. The heartwood of trees. | |
| 6. n. (figurative) Courage or assertiveness. | |
| 7. n. The stiffness of an arrow. | |
